ok ho provato a fare come dici tu....


setto MTU a 1492 sia sul router che su TCP optimizer....

rifacendo il test pero' mi da sempre:

TCP options string = 020405840103030401010402
MTU = 1452
MTU is not fully optimized for broadband. Consider increasing your MTU to 1500 for better throughput. If you are using a router, it could be limiting your MTU regardless of Registry settings.
MSS = 1412
MSS is not optimized for broadband. Consider increasing your MTU value.
Default TCP Receive Window (RWIN) = 1046528
RWIN Scaling (RFC1323) = 4 bits (scale factor of 8)
Unscaled TCP Receive Window = 65408

For optimum performance, consider changing RWIN to a multiple of MSS.
Other RWIN values that might work well with your current MTU/MSS:
519616 (MSS x 46 * scale factor of 8)
259808 (MSS x 46 * scale factor of 4)
129904 (MSS x 46 * scale factor of 2)
64952 (MSS x 46)
bandwidth * delay product (Note this is not a speed test):

Your TCP Window limits you to: 41861 kbps (5233 KBytes/s) @ 200ms
Your TCP Window limits you to: 16744 kbps (2093 KBytes/s) @ 500ms
MTU Discovery (RFC1191) = ON
Time to live left = 48 hops
TTL value is ok.
Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = ON
IP type of service field (RFC1349) = 00000000 (0)



come cavolo devo fare per settare l'MTU in maniera corretta???
e quale RWIN dovrei impostere considerando ceh la portante e' a 13500 kbps circa??